secret sign

I ask him to tell me the story that moved the women of southwest Iowa to tears—the secret sign that got him to keep running.

A secret sign, however, soon caused the armed attendants of the place to lead Antonio and his companion from the room.

Dalis had known the secret sign manual of these two; but would the intelligence of the cubes comprehend it?

It was this sort of men who discharged their prisoners by giving a secret sign to lead them to their execution!

Sarka now was glad that Dalis knew the secret sign manual, and his fingers worked swiftly as he spoke to the rebel.

Then Rei made a secret sign, and wondering greatly that a woman should have the inner wisdom, the priest let him pass.